From e86fa4e6e4d73ccea336575ad343bfbea2cc6f8c Mon Sep 17 00:00:00 2001
From: Sanel Zukan <karijes@users.sourceforge.net>
Date: Wed, 15 Jun 2016 15:05:50 +0200
Subject: [PATCH] Allow nil/empty values in payload.

---
 monroe.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/monroe.el b/monroe.el
index ff9dfb9..cd50269 100644
--- a/monroe.el
+++ b/monroe.el
@@ -158,7 +158,8 @@ starting with 'd' and ending with 'e'."
   (concat "d"
     (apply 'concat
       (mapcar (lambda (str)
-                (format "%d:%s" (string-bytes str) str))
+                (let ((s (if str str "")))
+                  (format "%d:%s" (string-bytes s) s)))
               message))
     "e"))